Operating mechanism for ventilators.



' No. 870,331. PATENTED NOV. 5, 1907.

' A. Q. WOLF.

OPERATING MECHANISM FOR VBNTILATORS.

APPLICATION FILED N016. 190i 4 sums-sum 1.

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No. 870,331. PATENTED NOV.- 5, 1907.

. A. Q. WOLF.

OPERATING MECHANISM FOR VENTILATORS.

APPLICATION FILED NOV. 6. 1906.

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A. Q. WOLF. vOPERATING MECHANISM FOR VENTILAIORS.

APPLICATION FILED NOV. 6. 190a.

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No. 870,331. PATENTED NOV. 5, 1907.

A. Q. WOLF. OPERATING MECHANISM FOR VBNTILATORS.

APPLIOATION FILED NOV. 6. 1906.

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UNrrnn STATES PATENT FFIQE.

ALVIN Q. WOLF, OF DAYTON, OHIO, ASSIGNOR TO THE WOLF MACHINE COMPANY, OF

DAYTON, OHIO, A CORPORATION OF OHIO.

OPERATING MECHANISM FOR VENTILATORS.

Specification of Letters Patent.

Patented Nov. 5, 1907.

Application filed November 6, 1906. Serial No. 342.255.

To all whom it may concern:

Be it known that I, ALVIN Q. WOLF, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Operating Mechanism for Ventilators, of which the following is a specification, reference being had therein to the accompanying drawings.

The present invention relates to operating mechanism for ventilators of the character ordinarily employed in green houses, foundries and buildings of similar character where the ventilating sash are located along the ridge pole of the building or in other inaccessible places.

The object of this invention is to provide an operating mechanism, which with the application of a comparatively small amount of power, will positively and uniformly operate long stretches of these sash, which mechanism includes an improved actuating mechanism connected to the sash, means for positively locking the sash in its adjusted position, and a suitable brake mechanism for controlling the downward movement of the sash.

With this end in view my invention consists in certain novel features of construction hereinafter to be described, and then more particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is an elevation showing a portion of a building with my operating mechanism in place therein; Fig. 2 is a front elevation of the operating mechanism proper; Figs. 3 and 4 are detail views of the locking pawls; Fig. 5 is a detail view of the controlling lever; Fig. 6 is a horizontal sectional view, taken through the controlling lever and one of the pawls; Fig. 7 is a detail sectional view of the brake mechanism; Fig. 8 is a detail of the brake shoe; Fig. 9 is a detail view showing a modified form of supporting bracket; Fig. 10 is a detail View of a modified form of operating mechanism; Fig. 11 is a side elevation of the sash-actuating mechanism; Fig. 12 is a vertical section taken centrally through the pinion and yoke; Fig. 13 is a horizontal section of the same; Fig. 14 is a detail view of the actuating pinion.

In these drawings, the reference numeral 1 indicates the frame-work of a building, having a swinging ventilating sash 2 and provided with a supporting post 3 which may be of any suitable character, either a post installed for this purpose and suitably secured between the floor and the rafters of the building, or a center post forming a part of the building, such as are commonly used in green houses. Rigidly secured to the supporting post 3 is a bracket 4, preferably having its rear face shaped to conform to the shape of the supporting post 3, which is usually cylindrical, and provided with horizontal slots 5, adapted to receive the bolts 6 which extend through the same, and engage a clip 7 in the opl posite side of the supporting post 3. The bracket 4 is provided near its upper and lower ends with outwardly extending projections 8 and 9 having their outer ends reduced to form bearing portions or stud-shafts 10 and 11. Upon the lowermost of these stud-shafts is mounted a sleeve 12, on the inner end of which is provided a sprocket wheel 13 and on the outer end a power wheel 14, both the power wheel and the sprocket being preferably cast integral with the sleeve 12. The wheel 14 is provided with a suitable socket 15, adapted to receive a handle 16 which is secured thereto by a suitable bolt 17. The wheel 14 is provided along its periphery with a series of recesses 18 extending completely around the periphery of the wheel and separated by lugs or teeth 19 of a length equal to substantially one-half the width of the rim of the wheel 14, thereby forming around one edge of the periphery of the wheel a series of teeth having their upper faces flush with the outer face of the rim of the wheel and of a length equal to substantially one-half of the width of the rim and of a width and depth suflicient to afford adequate strength therefor. The remainder or inner half of the rim of the wheel 14 is smooth and uninterrupted. The sleeve carrying the sprocket wheel and the wheel 14 may be secured on the shaft 11 in any suitable manner, that shown in the drawings being the ordinary washer 20 and split key 21. The diameter of the wheel 14 is such that its periphery or rim is located slightly below the upper stud-shaft 10 of the bracket 4, which is provided on its outer end with two oppositely facing pawls 22 and 23, the outermost of these pawls, 22, being provided at its lower end with an inwardly extending toe 24 adapted to extend inward partially across the rim of the wheel and engage the teeth 19.thereof. If desired, this toe may be formed with a V-shapcd groove 25 to provide holding edges to more firmly engage the teeth of the whee. The pawl 23 has its lower end squared to form holding edges 26 at the opposite corners thereof and is provided at its upper end with a bearing sleeve or boss 27, which is journaled on the shaft 10. Intermediate the bearing sleeve and the holding end of the pawl is an inwardly extending lug 28. Mounted on the shaft 10 inthe rear of the pawls 22 and 23 is an actuating lever 29, provided at its forward end with a weight 30 and at its opposite end with an operating handle 31 and having intermediate the weight and the handle an elongated boss 32, having its opposite ends forming cam bearings 33 and 34. This boss is provided with a central elongated bearing aperture 35 which receives the shaft 10 and forms a bearing for the lever. Intermediate the weighted end 30 and the boss 32 is a recess 36 adapted to receive the end of the lug 28 on the pawl 23 and cause the pawl to move in unison with the lever 29, thereby tending normally to depress the pawl and hold the same in operative relation with the teeth of the wheel 14-, and, when the handle 31 of the lever 29 is depressed, the pawl 23 is carried upward with the weighted end of the lever, releasing the same from the teeth. The lever 29 has its opposite sides identical in construction, enabling the mechanism to be placed upon the shaft 10 in a reverse position when it is desired to operate the wheel 14 in the opposite direction. Mounted upon the shaft 10 in the rear of the lever 29 is a brake 37, comprising a plate 38 having an elongated bearing aperture 39, adapted to receive the shaft 10 and permit the plate 38 to have a sliding movement transversely thereof. The plate 38 is provided on its rear surface with a groove 40 which receives the end of a lug 41 formed on the outer end of the proj ection 8 on the bracket 4, which serves as a guide to prevent the plate from rotating on the shaft 10, but allows the same an unrestricted sliding movement thereon. The plate 38 is provided at its lower end with a toe or shoe 42 extending beneath the rim of the wheel 14 and adapted to engage the same when the plate is moved transversely of the shaft 10. The plate is further provided near its upper end with a projection 43 extending parallel with the shaft 10 and adapted, when in its assembled position, to be engaged by the cam surface 33 of the actuating lever 29, the opposite cam 34 en-, gaging on the rim of the wheel 14.

From the foregoingdescription it will be seen that when the handle of the lever 29 is depressed to raise the weighted end 30 thereof, thereby moving the pawl 23 out of engagement with the teeth 19 of the wheel 14 and allowing the wheel to move in the reverse direction, the cam 33 of the lever 29 comes into engagement with the lug 43 of the brake 37, causing the same to move trans versely of the shaft, bringing the shoe or toe 42 into ongagement with the inner face of the rim of the wheel, and, at the same time, the cam 34 of the lever comes into engagement with the outer face of the rim, thereby grasping the same between the cam 34 and the brake shoe 42 and controlling the movement of the same at the will of the operator. The parts are held in their assembled position upon the shaft 10 in any suitable manner, that shown in the present instance being merely the usual split key 44.

It is sometimes desirable to mount the bracket 4 directly upon the wall or beam of a building without the interposition of the supporting post 3. When this is desired, I provide a supporting plate 45 which extends transversely of the bracket 4 and is preferably provided with a projection conforming to the shape of the rear face of the bracket 4. The plate 45 is provided with vertical slots adapted to receive the bolts 6 and permit the plate to be adjusted vertically with relation to the bracket 4 and is further provided near the opposite ends thereof with slots 46 extending transversely of the bracket 4 and adapted to receive the bolts for securing the same to the wall and to permit the same to be adjusted relatively thereto. It is also sometimes desirable in operating heavy sashes to acquire reater power with a corresponding loss of speed, and, when this is desired, I substitute for the bracket 4 a bracket 47, adapted to be interposed between the opposite ends of the support 3, which is divided intermediate its ends to receive the same. The bracket 47 is provided with suitable sockets 48 to receive the adjacent ends of the supporting post 3, and, intermediate these sockets is provided with a bracket proper 49 which is provided with a stud-shaft, adapted to support the wheel 14, and a bevel gear 50 which is substituted on the stud-shaft for the sprocket wheel. 13. This bevel gear meshes with a second bevel gear 51 which is mounted on one end of a shaft 52 journaled in the bracket 49 transversely of the stud-shaft and provided on its opposite end with a sprocket wheel 53 which corresponds to the sprocket wheel 13 of the other construction. In other respects the construction and operation of this form of the device is similar to that above described.

A shaft 54 is mounted in suitable bearings 55 secured near the sash to be operated and extends longitudinally of said sash. This shaft is provided with a-sprocket wheel 56 which is located in alinement with the sprocket wheel 13 and is connected thereto by a sprocket chain 57, extending around said sprocket wheels and operatively connecting the same. The shaft 54 is provided at suitable intervals with pinions 58 which are normally in mesh with the teeth 59 of segmental racks or arms 60, pivotally secured to the sash 2, as at 61. A yoke 62, having slots 63 near the upper end thereof to engage with the segmental rack 60, extends around the pinion 58 and serves to hold the same in engagement with the teeth 59 of the rack 60 and to allow the rack 60 to move freely in a direction transverse to the shaft 54 when the pinion 58 is rotated with said shaft. The yoke 62 is provided at its lower portion which is adjacent to the pinion 58 with upwardly extending flanges or lips 64 and 65, the lip 65 extending inward over the flange 66 of the pinion 58 and serving to prevent outward movement of the yoke and the flange 64 extending along the outer edges of the teeth of the pinion and serving to prevent inward movement of the yoke, and it will be seen that the teeth of the pinion 58 move in a grooved guideway formed by the flanges 64 and 65 which prevent the yoke 62 from moving out of engagement therewith. This groove or guideway in the lower portion of the yoke is provided with one or more apertures 66*, adapted to allow dust or dirt, which might accumulate in the groove and interfere with the movement of the pinion, to escape.

In order to limit the movement of the shaft 54 and prevent the rack 60 from moving out of engagement with the pinion 58, the sprocket chain 57 is provided with suitable stops 67 which are adapted to engage with the slotted lugs or ears 68 securely mounted on the bolts 6 of the bracket 4. These lugs or stops are placed in such a position upon the chain 57 that when the sash and its operating rack 60 have reached the limit of their movement in either direction, the stop will come in engagement with the lug 68 and prevent further movement, thereby avoiding accident and breakage of the parts. The shaft 54 is mounted in suitable hangers 55, which are supported from the rafters or other stationary support and may be of any suitable construction.

The operation of the device as a whole will be readily understood. In brief, it is as follows: The shaft 54 being mounted in the hangers 55 with the sash 2 in its lowermost position, as shown in Fig. 11, and the bracket 4 being secured to a suitable support, the pawl 22 is raised and the power wheel 14 revolved forwardly, thereby transmitting a forward motion to the shaft 54 through the medium of the sprocket wheels 13 and 56 and chain 57 and causing the pinion 58 to engage the teeth 59 on the rack 60 and move the same outward,

thereby raising the sash. When the same has been raised to the desired extent the wheel is released and the weight of the sash causes the same to move backward until the pawl L3, which is normally depressed, comes into engagement with one of the teeth 19, thereby locking the same against further backward movement. When it is desired to lower the sash, the operator moves the handle 31 of the lever 29 downward, thereby raising the weighted end 30 of the lever which carries with it the pawl 23, releasing the wheel 14 and allowing the same to move backward under the influence of the weight of the sash. This movement, however, is controlled by the brake mechanism which is operated simultaneously with the releasing oi the pawl 23 and the downward movement of the sash is thereby placed under the control of the operator.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

Having hus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In an apparatus of the character described, the combination. with a sash actuating mechanism, of a power wheel provided with teeth. oppositely extending pawls adapted to engage said teeth either separately or simultaneously and to lock said power wheel against movement: in one or both directions. and means for connecting said power wheel with said sash-operating mechanism. substantially as described.

2. In a device of the character described. the combina tion, with a sash actuating mechanism, of a power wheel provided with teeth, a pawl held normally in operative relation with the teeth of said wheel, a brake mechanism supported independently of said pawl. means for simultaneously releasing said pawl and actuating said brake mechanism, and means for operatively connecting said power wheel with said sash-actuating mechanism, suns liltially as described.

3. In an apparatus of the character descr bed-the collibination, with a sash actuating mechanism, of a power wheel provided with teeth along one side )f its periphery, a pawl normally in engagement with said teeth, a brake supported independently of said pawl and adaptedto engage the opposite side of said periphery, and means for simultaneously releasing said pawl and actuating said brake mechanism. substantially as described.

4. In a device of the character described, the combination. with a hinged member, of an operating mechanism comprising a support, a power wheel mounted thereon and provided with teeth, a studshaft carried by said support, a pawl mounted on said shaft and normally in engagement with the teeth of said wheel, a brake mechanism mounted on said shaft separately from said pawl, and means carried by said shaft for releasing said pawl and actuating said brake mechanism, substantially as described.

In a device of the character described, the combination, with a hinged member, of an operating mechanism comprising a support, a power wheel carried thereby and provided with teeth, a stud-shaft carried by said support, a pawl mounted on said shaft and provided with a lug, and a weighted lever mounted on said shaft and havin a recess therein adapted to receive the lug on said pawl, thereby causing the pawl to move in unison with said lever. substantially as described.

(1. In an apparatus of the character described, the cone bination. with a hinged member. of an operating mechanism comprising a support, a power wheel mounted thereon and provided with teeth, a stud-shaft carried by said support, a pawl mounted on said stud-shaft and normally in engagement with the teeth of said wheel, a brake mechanism mounted on said shaft separately from said pawl and adapted to engage the rim of said wheel, and means mounted on said shaft for releasing said pawl and for operating' said brake, substantially as described.

7. In an apparatus of the character described, the co1nbination, with a hinged member, of an operating mechan ism comprising a support, a power wheel carried thereby, a stud-shaft carried by said support, a brake mechanism slidably mounted on said shaft and consisting of a plate having a brake shoe thereon, and means for moving said plate to bring said shoe into contact with said wheel, substantially as described.

8. In an apparatus of the character described, the combination, with a hingedmember, of an operating mechanism comprising a support, a power wheel mounted thereon, a stud-shaft carried by said support, a plate mounted to slide transversely of said shaft and having a brake shoe secured thereto, a lug carried by said plate, and a cam mounted on said shaft adapted to engage said lug to move said plate and bring said brake shoe into engagement with the rim of said wheel, substantially as described.

(I. In an apparatus of the character described, the combination, with a hinged member, of an operating mechanism comprising a support, a power wheel mounted thereon, a stud-shaft carried thereby, a plate mounted to move transversely of said shaft and having a brake shoe and a lug on one face thereof, a slot in the opposite face thereof, a lug carried by said support and engaging said slot, and a cam mounted on said shaft and adapted to move said plate to bring said brake shoe into engagement with the rim of said wheel, substantially as described.

10. In an apparatus of the character described, the combination, with a hinged member, of an operating mechanism comprising a support, a power wheel mounted thereon, a stud-shaft carried by said support, a plate having 'a brake shoe and mounted to move transversely of Said shaft. a lug on said plate, and a lever having two cams thereon. one of said cams being adapted to engage said lug and move said plate to bring the brake shoe into engagement with the inner side of the rim of said wheel and the other cam being adapted to engage the outer side of the rim of said wheel, substantially as described.

11. In an apparatus of the character described, the combination, witlra hinged member, of an operating mechanism comprising a power wheel having one side of its rim recessed to form teeth and its opposite side cylindrical, a stud'shaft carried by said support, a pawl mounted on said shaft and normally in engagement with one of said teeth, a lug carried by said pawl, a lever mounted on said shaft and adapted to engage said lug, and a cam carried by said lever and adapted to engage the cylindrical portion of said rim when said lever is moved to release said pawl, substantially as described.

12. In an apparatus of the character described, the com bination, with a hinged member, of an operating mechanism comprising a support, a power wheel mounted thereon having one side of its rim recessed to form teeth and the other side cylindrical, a stud-shaft carried by said support, a pawl mounted on said shaft and normally in en gagement with said teeth, a lug on said pawl, a plate slidably mounted on said shaft and having a brake shoe extending beneath the cylindrical portion of said rim, a lug carried by said plate, a lever mounted on said shaft and having a recess adapted to receive the lug on said pawl, an oblong bearing aperture, and a boss on said lever having two cam surfaces, one adapted to engage the lug on said plate and the other to engage the cylindrical portion of said rim, substantially as described.

13. In an apparatus of the character described, the combination, with a sash and an operating mechanism, of a shaft, means for operatively connecting said shaft to said operating mechanism, a pinion secured to said shaft, :1 toothed arm carried by said sash and engaging said pinion, a yoke surrounding said pinion and having its opposite ends slotted to receive said toothed arm, substantially as described.

14. In an apparatus of the character described, the combination, with a sash and an operating mechanism, of a shaft operatively connected with said operating mechanism, a pinion on said shaft, a toothed arm connected to said sash and engaging said pinion, a yoke having its opposite ends slotted to receive said toothed arm, and flanges on the central portion thereof engaging the opposite sides of the teeth of said pinion, substantially as d.e-

scribed.

15. In an apparatus of the character described, the combination, with a sash and an operating mechanism, of a shaft operatively connected to said operating mechanism, a pinion secured to said shaft, :1 toothed arm secured to said sash, a yoke surrounding said pinion and having its opposite ends slotted to receive said toothed arm, and a guideway formed in the central portion of said yoke and having apertures through the outer edge thereof, substantially as described.

16. In an apparatus of the character described, the combination, with a sash, a shaft extending parallel thereto and operatively connected therewith, and a sprocket Wheel carried by said shaft, of a power wheel, a sprocket Wheel connected to said power Wheel, a sprocket chain connecting said sprocket Wheels, and a pair of oppositely facing pawls adapted to engage said power wheel either singly or simultaneously to lock the same against movement either in one or in both directions.

In testimony whereof, I affix my signature in presence of two Witnesses.

. ALVIN Q. WOLF. Witnesses HARRY J. KELLER, WILLIAM H. HALL. 

